"For anyone looking to maximise the size of their crop, we can't recommend Multi-Ducts highly enough"

Groworks

Multi-Ducts

Multi-Ducts are ideal if you're growing on a larger scale. Grow up to 48 plants without media!

They work the same as a Gro-Tank NFT System, but give you the space to grow a higher number of plants.

Description

HOW IT WORKSNo more hauling bags of media around!

Just place young plants into the Multi-Duct when the roots are showing on the outside of the soil or rockwool block.

Don't add any more soil, the roots will grow directly into the stream of nutrient solution which is constantly pumped around the hydroponic system. The run-off flows back into the reservoir.

Growth is fast, productive and healthy because the plants take up whatever they need, never too much or too little, and there's no soil to restrict root access to the water, nutrients and oxygen.

Switch to NFT and you'll never switch back!

Why They are Great

Perfect for growers who want to:

Use less media

Grow tall plants in a low space – so need a low-level system

Get used to one system and scale up to larger systems over time – available for up to 120 plants

Dimensions

Multi-Ducts

System

Size L x W x H cm

No. of Plants

MD100 50L

171 x 120

9

MD200 90L

171 x 120

9

MD300

342 x 120

18

MD601

196 x 118

6-8

MD602

392 x 118

12-16

MD603

196 x 212

12-16

MD604

392 x 212

24-32

MD801

251 x 118

10-12

MD802

502 x 118

20-24

MD803

251 x 211

20-24

MD804

502 x 211

40-48

Hints and Tips

Ensure plants are well-rooted before they go into the system. The starter media should be covered in white roots.

Spacing - as a rule of thumb 1 plant per square foot. This can be increased or decreased depending on plant variety.

Leave the pump running constantly.

Start plants in either

3” or 4” rockwool cubes

3” / 4” pots filled with soil or coco

3” net pots filled with clay.

If using rockwool cubes completely remove plastic wrapping from the cubes.

If moving from pots to the Gro-Tank remove the plants from the pots so the roots can access more oxygen.

All but the smallest of plants will need additional support, i.e. yoyo’s or pea netting.

Set the flow rate on the pump so that the nutrient solution moves over the spreader mat constantly, but not so much that the roots are submerged.

Cut lengths of spreader mat long enough to allow an overhang of a few inches from the tray into the tank.

Plants under lights will take up water at a faster rate than they take up nutrient which means the EC will rise over time. Top up the tank with half strength nutrient solution, check EC and add extra nutrient if required.

Then adjust pH level and perform a solution change every 2-3 weeks to keep the pH and EC balanced.

What our Retailers are Saying

Rotherham Hydroponics: "The NFT (GroTanks and Multi-Ducts) are our preferred method of growing and if you get the set up right the results are unrivalled."

Brit Crops:"At Brit Crops we regularly recommend NFT (GroTanks and Multi-Ducts) as the wide variety of sizes available means there’s an NFT system to suit every customer and every size or shape environment. NFT systems are easy to set up, monitor and maintain, meaning growers of all ability and experience can quickly master the technique. They require very little media resulting in minimal waste and reset expense without compromising yield or quality."

Greenfinger Hydroponics: "NFT (Grotanks and MultiDucts) are the best systems for me. I remember the first version was a fibre glass GT205 and that’s how I got into hydroponics. It was a revelation for me!"

North West Hydro: "NFT Grotanks and Multiducts are great systems as there is hardly any waste due to minimum media used, therefore bags of media don’t have to be dragged around. Also if you use it right you get more yield."